Home / Isuzu Trooper / 1990 ← New search 1990 Isuzu Trooper Owner reports · Recalls · Investigations
Illustration Same car. Similar to other model years Owner complaints for the 1990 Isuzu Trooper do not stand out strongly from the model-year median of 25.
Counts are not adjusted for sales, age, mileage exposure or reporting. A lower count does not establish that a car is problem-free.
About this comparison → Check a VIN with NHTSA ↗ Model-level counts do not show whether a particular VIN is affected or repaired.
Inspection summary Print inspection summary 1990 Isuzu Trooper NHTSA snapshot: September 18, 2026. 23 owner complaints · 2 recall campaigns · 6 investigations.
Counts are not failure probabilities and are not adjusted for sales, age, mileage exposure or reporting. One report may name several categories. Comparison method and limitations .
Top reported categories (up to 5) Engine And Engine Cooling: 6 reports Power Train: 4 reports Electrical System: 3 reports Structure: 3 reports Service Brakes, Hydraulic: 2 reports Full reported-category list and vehicle report
Recall links Check a VIN with NHTSA . Model-level history does not establish whether a particular VIN is affected or repaired.
Print the top reported categories, recall links, snapshot date and comparison limits.
Overview Reported problems Recalls Investigations What to inspect Owner reports
How this year compares Owner complaints by model year
Compare all Trooper years → Counts vary with age, sales, mileage exposure and reporting. They are not failure rates.
What owners reported most All reported categories Tap a category to read its complaints. One report may name several components.
When problems were reported Mileage at the reported incident
Limited mileage data: 1 of 23 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
Issues worth paying extra attention to based on owner reports.
Engine And Engine Cooling. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports → Power Train. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports → Electrical System. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports → NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports5 fire reports3 injury reports
Engine And Engine Cooling complaints 6 reports Clear category filter Mileage unknown · Jan 27, 2007
Engine And Engine Cooling
MY 1990 ISUZU TROOPER, STANDARD, INTENSIFIES ITS REVS IN IDLE SUDDENLY. SOMETIMES IT GOES UP AND DOWN, UP AND DOWN... AND I CAN SEE HOW THE TEMP GAUGE RISES QUICKLY. MY MOMENTARY SOLUTION IN SUCH CASES IS TO STOP THE CAR AND SHUT OFF THE IGNITION AND WAIT, SOMETIMES THIS LEAVES ME SOME MINUTES UNTIL IT STARTS REVVING UP AND DOW…
Read full complaint MY 1990 ISUZU TROOPER, STANDARD, INTENSIFIES ITS REVS IN IDLE SUDDENLY. SOMETIMES IT GOES UP AND DOWN, UP AND DOWN... AND I CAN SEE HOW THE TEMP GAUGE RISES QUICKLY. MY MOMENTARY SOLUTION IN SUCH CASES IS TO STOP THE CAR AND SHUT OFF THE IGNITION AND WAIT, SOMETIMES THIS LEAVES ME SOME MINUTES UNTIL IT STARTS REVVING UP AND DOWN AGAIN. NO INJURIES SO FAR, BUT I HAVE NOT BEEN USING THE TRUCK MUCH FOR THIS SAME REASON. I WOULD LIKE TO KNOW WHAT ID THE CAUSE SO THAT MY MECHANIC CAN SOLVE IT. *NM
NHTSA ODI #10180877
Mileage unknown · Feb 11, 1998
Engine And Engine Cooling
ENGINE FAILURE.
NHTSA ODI #530264
Mileage unknown · Nov 8, 1996
Engine And Engine Cooling Equipment Service Brakes, Hydraulic
ENGINE HEAD CRACKED.
NHTSA ODI #511162
Mileage unknown · Sep 12, 1996
Engine And Engine Cooling
ENGINE OIL COLER HOSE THAT WAS LAYING AGAINST THE MANIFOLD MELTED/BURST. *AK
NHTSA ODI #508452
Mileage unknown · Aug 28, 1996
Engine And Engine Cooling
ENGINE COOLER HOSE RECALL REPAIRS REFUSED DUE TO MODEL (90V-166). *AK
NHTSA ODI #508019
Mileage unknown · Aug 20, 1996
Engine And Engine Cooling Fire
ENGINE COMPARTMENT FIRE.
NHTSA ODI #507703
Recall campaigns 2 Sep 20, 1990
IMPROPERLY INSTALLED HOSE ON THE OIL COOLER COULD COME IN CONTACT WITH THE EXHAUST MANIFOLD AND COULD MELT.
Consequence & remedy Consequence: ENGINE OIL COULD LEAK OUT WITH POTENTIAL FOR ENGINESEIZURE AND DAMAGE AND COULD RESULT IN A FIRE.
Remedy: PROPERLY INSTALL COOLER HOSE CLIP TO PREVENT CONTACT WITH EXHAUST MANIFOLD.
Sep 20, 1990
PUTTING IN MORE TRANSMISSION OIL THAN SPECIFIED CAN CAUSE OIL TO BLEED THROUGH AIR GROOVE ON TO THE EXHAUST MANIFOLD IF OIL TEMPERATURE RISES.
Consequence & remedy Consequence: THIS COULD CAUSE SMOKE EMISSION FROM THE MANIFOLD, WHICHCOULD IGNITE RUBBER HOSES AND RESULT IN A FIRE.
Remedy: REPLACE OIL LEVEL GAUGE AND NOTIFY OWNERS TO USE ONLY THE SPECIFIED AMOUNT OF AUTOMATIC TRANSMISSION FLUID.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
Defect investigations 6 DP92015 · Engine Compartment Fires Opened Jul 30, 1992 · Closed Nov 25, 1992
Status: closed (inferred from source dates) · Engine And Engine Cooling
ENGINE COMPARTMENT FIRES
EA92018 · Heater Core Failure Opened Jun 2, 1992 · Closed Apr 2, 1993
Status: closed (inferred from source dates) · Visibility:defroster/defogger/hvac System
There is no summary currently available
DP92005 · Defective Heater Cores Opened Mar 3, 1992 · Closed Jun 2, 1992
Status: closed (inferred from source dates) · Visibility:defroster/defogger/hvac System
DEFECTIVE HEATER CORES
EA91033 · Rear Door Hinge Separation Opened Jul 15, 1991 · Closed Jul 28, 1992
Status: closed (inferred from source dates) · Structure
There is no summary currently available
PE91046 · Rear Door Hinge Separation Opened Feb 19, 1991 · Closed Jul 15, 1991
Status: closed (inferred from source dates) · Structure
There is no summary currently available
PE90087 · Diesel Engine Surge Opened Jun 6, 1990 · Closed Oct 12, 1990
Status: closed (inferred from source dates) · Engine And Engine Cooling
There is no summary currently available
An investigation is not a finding of a defect, and closure does not prove a vehicle is problem-free.
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